Knot-tying machine.



No. 789,468. PATBNTED MAY 9, 1905. S. A. WEST.

KNOT TYING MACHINE.

APPLICATION FILED 1150.21. 1904.

5 SHEETS-SHEET s.

I l 2721..... i u U'Ulli A g A 'f i A i f I A la :lf 1 4 PATENTED MAY 9,1905.

S. A. WEST. KNOT TYING MACHINE.

APPLICATION FILED DB0. 21, 1904.

SHEETS-SHEET 4.

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No. 789,468. PATENTBD MAY 9, 1905. s. A. WEST. KNOT TYNG MACHINE.

APPLIGATION FILED DBC.21. 1904.

5 SEEETS-SHBET 5.

STATES l.Patented lVIay 9, 1905.

PATENT Trice.

KNOT-TYING MACHINE..

SPECIFICATION forming part of Letters Patent No. 789,468, dated May 9,1905.

Application filed December 2l, 1904. Serial No. 237,789.

To all LU/wmf t rrmr/ corr/cern:

' Be it known that 1, STILLMAN A.Wnsr, a citizen of the Uni ted States,residing' at Brookline, in the county of Norfolk, State ofMassachusetts, have invented a certain new and useful Improvement inKnot-Tying Machines, of which the following` is a specification,reference being had therein to the accompanying drawings.

The invention consists in an automatic machine which unites two lvarns,threads, or the like with a weavers knot, it comprising, essentially, incombination, means whereby two yarns are assembled with one thereofinclosed in a bight of the other and devices by which the extremity ofthe inclosed yarn is carried around the doubled portions of the otheryarn and interlocked with the encircling portion of itself.

I have illustrated the invention herein as embodied in a mechanism whichautomatically bends or doubles one yarn or thread around the otherthereof in the form of a bight with the free extremity of the first yarnor thread adjacent to the main portion of such yarn or thread, thencarries the free extremity of the other yarn or thread completely aroundthe two proximated portions of the first yarn or thread and passes thesaid extremity of the second yarn or thread between the said twoproximated portions and the encircling' portion of the second yarn orthread to effect the interlocking.

So far as l am aware the idea of automatic means to produce a weaversknot by operating in the manner above set forth upon the yarns orthreads which are to be united is entirely new, and therefore in thecase of the broader and more generic principles of the invention theinvention is not dependent upon the precise mechanical construction andarrangement of the parts of the machine.

ln the drawings, Figure l is a side elevation of a portable knot-tyingmachine containing the embodiment aforesaid of the invention, the saidiigure showing only a portion of the lacing-cord that is employed inconnection with the strap, which in this instance it is contemplatedusing' for the purpose of binding the machine upon the wrist of the userthereof and also only a portion of the lever which is employed forwinding' up the actuating-spring'. Fig. 2 is an opposite elevation ofthe said embodiment, the said lacing-cord and portions of the strap andlever aforesaid being omitted. Fig. 3. Sheet 2, is a plan of the machinewith portion of the said lever broken away, as well as portions of theguidestrips, which are located adjacent and above the devices that areinvolved more immediately in the operation of tying a knot. Fig. 4,Sheet 2, is a bottom view of the machine, the said lever being partlybroken away and the strap being removed. Fig. 5, Sheet 3, is a front endelevation of the machine'with the lever partly broken away. Fig. 6,Sheet 3, is a view of the machine in longitudinal section, showingchiefly the two pairs of trimmers, their operating connections, and thecarrier-grippers, the trimmers and grippers being represented in opencondition. Fig. 7, Sheet 1i, is a view similar to Fig. 6, but showingthe trimmers and grippers in closed condition. Fig. 8, Sheet 3, isadetail view showing the bight-'former separately in side elevation. Fig.9, Sheet 3, shows the bight-former in plan. Fig. l0. Sheet 3, is a viewin vertical section on the plane indicated by the dotted line l0 l0,Fig. 8. Fig. 1l, Sheet 3, is a detail view showing mainly the device,hereinafter termed "carrier, by which the second yarn is carried aroundthe proximate portions of the bight of the iirst yarn, the said devicebeing in its normal position and the jaws thereof being separated fromeach other. Fig. 1Q, Sheet 3, is a view of the carrier in the sameposition as in Fig. 1l, but with the jaws closed. Fig. 13, Sheet 3, is atop or plan view of the carrier in one of its intermediate positions andwith the jaws thereof closed together. Fig. lt, Sheet 3, is a detailview in elevation looking from the front in Fig. 5 of the device,hereinafter termed interlocken by which the free extremity of the secondyarn or thread after having been carried around the two proximatedportions of the iirst yarn or thread is passed between the said portionsand the encircling portion of the second yarn or thread. Fig. 15, Sheet3, is a detail plan View of the inter-locker, viewing it as in Fig. 3.Fig'. 16, Sheet 3, is an end elevation of the interlocker. Fig. 17,Sheet 4, is a view of the machine in longitudinal section, showingchiefly the two clamps and their operating connections, the said clampsbeing open. Fig. 18, Sheet 4, is a view similar to Fig. 17, but with aportion broken away, showing the two clamps in closed condition. Fig.19, Sheet 4, shows in elevation, detached, the detent-wheel, which isemployed for the purpose of controlling the rotation of the actuating orcam shaft. Fig. 20, Sheet 5, is a diagram showing certain of thefunctional parts in their normal positions, with two yarns appliedthereto in readiness for the performance of the knot-tying operations.Figs. 21 to 24, Sheet 5, are diag-rams showing various stages in theprocess of tying' a weavers knot by the devices of the machine hereinshown and described. Fig. 25 is a view, on an enlarged scale, showingthe knot which is produced by the machine herein shown and described.

Having reference to the drawings, the framework of the machinecomprises, essentially, the opposite side pieces 1 2 and the bottompiece 3. The side pieces are formed at their bottom edges withinwardly-extending lugs 5 5, Fig. 4, the inner or free ends of whichabut against each other. A screw 6, Fig. 2, unites the said lugs witheach other and holds their meeting ends together, in this way connectingthe two side frames together at their rear ends. The bottom piece 3 isheld in place between the side pieces by means of screws 7 7, Fig. 1,and 8, Fig. 2, thestems of said screws passing' through holes in theside pieces and screwing' into threaded holes, which are tapped in theopposite edges of the said bottom piece. Through their connection withthe said bottom piece the side pieces are held in place at their forwardends.

To the framework aforesaid are applied the essential functional elementsof the machine, such elements comprising the clamps shown in place inthe machine in Figs. 3 and 4 of Sheet 2 and Fig. 5 of Sheet 3 andseparately in Figs. 17 and 18 of Sheet 4, by which the main portions ofthe two yarns or parts of yarn in process of being tied together areheld during the operation of forming the knot, one of the said clampsalso cooperating with the interlocker in tightening' the knot; thebight-former 9, which is shown in place in the machine in Figs. 3 and 5and separately in Figs. 8, 9, and 10, Sheet 3; the carrier 10, by whichthe extremity of the second yarn is carried around the proximatedportions of the big'ht of the first yarn, the said carrier being shownin place in the machine in Figs. 3 and 5 and separately in Figs. 11, 12,and 13, Sheet 3; the trimmers (shown in place in the machine in Figs. 3and 5 and separately in Fig. 6, Sheet 3, and Fig. 7, Sheet 4) by whichafter the two yarns or parts of yarn have been grasped by the holdingporti-ons of the bight former and carrier the extremities of the saidyarns or parts of yarn are trimmed olf close to the said holdingportions preliminary to the formation of the knot; the spreader 11,Figs. 3 and 5, by which the loop of the second yarn is held open andtaut until the interlocker has engaged with the extremity of such yarnand the carrier has released its hold upon such extremity, and theinterlocker 12, by which the extremity of the second yarn is passedbetween the two proximated portions of the first yarn and the encirclingportion of the second yarn or thread, the said interlocker being' shownin place in the machine in Figs. 3 and 5 and separately in Figs. 14, 15,and 16, Sheet 3. The various functional elements which have beenenumerated are in operative connection with an actuating or cam shaft 13through operative trains of devices, which presently will be described.The said shaft is intermittingly rotated by or Linder the control of theoperative for the purpose of causing the said elements to act when it isdesired to tie a knot. At opposite sides of the said functional elementsare loc-ated fixed cheek-pieces 14 and 15, respectively, which areattached to adjoining parts of the xed framework, they constitutingportions of the said framework. The cheek-piece 14 is formed withvertical notches or slots 16 17, Figs. 1, 3, 17, and 18, extendingdownward into the same, and the cheek-piece 15 is formed with likenotches or slots 18 19, Figs. 2, 3, 5, 6, and 7. These four verticalnotches or slots are designed to receive the two yarns or threads whichare to be tied together. In practice when applied to the machine for thepurpose of being tied together the said yarns or threads are extendedsubstantially parallel with each other crosswise of the machine, onethereof being passed downward into the oppositely-located notches orslots 16 and 18, the other being passed downward into theoppositely-located notches or slots 17 and 19. The bobbins or the likeupon which the main portions of the said yarns or threads are containedare to be understood as located at the left-hand side of the machine inFig. 5 and below the portion of the machine, the free extremities of thesaid yarns or threads being extended toward the right-hand side, so asto extend or hang from the notchesor slots 18 and 19.

The clamping devices are located in proximity to the notches or slots 16and 17 in position to engage with the respective yarns or threads. Thechief function of the said devices is to hold the yarns or threads atpoints between the sources of supply thereof and the knot-tying devicesand keep the same in a proper state of tension during the knot-formingoperations. One of the said clamps has other functions also, as will beexplained. For engagement with the yarn, which is entered IlO into thenotch or slot 16, a movable clamp member c, Fig. 3 of Sheet 2 and Figs.17 and 18 of Sheet 4, is provided. This clamp member t is formed with anopen-topped notch Z), (shown best in Figs. 17 and 18,)which normally c.,in its position of restsregisters with the notch or slot 16, as in Fig.17, and into which the yarn enters when it is placed within the saidnotch or slot 16. The said clamp member is constituted by an arm, whichat its lower end is mounted by means of a pivot c upon the cheek-piece14. The acting portion of the clamp member c is located at the front ofthe slot Z of the said cheelcpiece. It coacts with the portion of cheek-piece 14 which is located at the rear of the notch or slot 16. For thepurpose of clamping the yarn aforesaid movement is communicated to theclamp member t rearward from the position in Fig. 17 to that in Fig. 18.This movement carries the notch Z out of register with the notch or slot16 of the cheelepiece 141. It also causes the yarn to be compressedbetween the opposingl and proximate lateral faces of the saidcheek-piece and acting portion. Thereby the said yarn is clamped. Forengagement with the yarn which is entered into the notch or slot 17movable clamp members Z and e are provided, the said clamp membersoperating to engage the said yarn between them. The clamp member e ismounted upon the clamp member Z by means of a pivot, as f. The saidclamp member Zis constituted by an arm or lever which is mounted at therear end of the machine upon the side plate 1 by means of a pivot g,(shown in Figs. 17 and 18.) For the purpose of actuating the clamp Z ethe said arm or lever is furnished with a pin or roll ZL, which worls ina cam-groove fzf (shown by dotted lines in Figs. 17 and 18) in acam-disk Zt", that is fast upon the shaft 13. Vhen the shaft is rotated,the walls of the said cam-groove communicate movement up and down to theclamp Z e. For the purpose of occasioning relative movement of the clampmembers Z and e with respect to each other the clamp member c isfurnished with a proj ection or pin/m, located eccentrically withreference to the pivotf, and a cam-piece/n is supported from the bottompiece 3 of the machine-frame, the said camspiece being formed with acam-slot c, into which the projection or pin m enters, as shown in Figs.17 and 18. The normal position of rest of the clamp members isrepresented in Fig. 17, in which the clamp member is raised relative toclamp member Z suitably to admit between them the yarn thatis placedwithin notches or slots 17 19. When the clamp members Z c are caused todescend from the position of Fig. 17, the walls of the lower portion ofthe cam-slot c act to swing the clamp member c relative to clamp memberZ so as to close the clamp members together, as in Fig. 18. For thepurpose of confining the thread at the rear between the cheek-piece 14and the clamp members Z c, so as to prevent the same from winding orswerving rearward out from under the free end of the swinging clampmember c as it descends a guide-strip n is affixed to the cheek-piece14E, so as practically to bridge the space or interval between the innersurface of the said cheek-piece and the clamp members Z c. In ord er toprevent the yarn from slipping along the acting face of the clamp memberZ out from Linder the free end of the clamp member e as the latterswings into the closed position thereof, the respective clamp membersare furnished with shoulders Z c, Fig. 17, constituting stops whichlimit the extent of the movement of the yarn as the acting portions ofthe clamp members come together. When the clamp members Z c are raisedinto their highest position by the cam-disk Zr, the action of the upperportions of the walls of the camslot 0 upon the projection or pin mcauses the acting portion of clamp member e to separate from thecoacting portion of clamp member Z and to assume an open position, as inFig. 17 the said clamp member c retaining its open position when theclamp members Z c are restored to the normal intermediate position,which is represented in Fig. 17. The extent of the swinging movementofthe clamp member e in opening is determined by the engagement of atail t, with which the same is fur nished, with a fixed stop ZE upon theclamp member Z. For the convenient actuation of the clamp member Z inproper unison with the clamp members Z c the arm of the said clampmember t is furnished with oppositelylocated cam-surfaces rs, and thearm or lever Z is furnished with a laterally-projecting pin Z. Vhen thearm or lever Z is moved downward from the normal position of Fig. 17, inwhich both clamps are open, the projection or pin t by its actionagainst the cam-surface .s moves the clamp member t rearward into theposition of Fig. 18, so as to cause the ,varn occupying the notches orslots 16 and Z to be compressed between the proximate surfaces of theacting portion of clamp member L and the cheek-piece 14, as aforesaid.In the subsequent complete rise of arm or lever Z the projection or pinZ acts against the cam-surface fr to return the clamp member t from theposition of Fig. 18 to that of Fig. 17, thereby movingl the said clampmember to its open position and releasing the yarn which previously washeld fast thereby.

The bight-former 9 is mounted to turn around a vertical axis, it having'a journal 911, Fig. 8 of Sheet 3, that works in a bearing, (shown inFig. 5 of Sheet 3,) with which the bottom piece 3 of the [ixed frameworkof the machine is formed or furnished. At its top the bight-former isfurnished at one side of the axis of rotation thereof with a grippercomprising a fixed jaw 20, extending upward from the body of thebightformer, and a IOO Aing surface 25, Fig. 9.

movable jaw 21, having a pivot 22 adjacent its lower end, the freeextremity of the said movable jaw extendingv upward. The movable jaw isfurnished with aprojection or tail 23, Fig. 10, which by its engagementwith the body of the bight-former, as in Fig. 10, acts as a stop tolimit the extent of the opening movement of the movable jaw. In thenormal position of the bight-former, which is represented in Figs. 3 and5, the acting portion of the movable jaw is located at the rear of thecorresponding portion of the fixed jaw and is separated from the latterby a space 0r opening suiiicient to enable a yarn conveniently to bepassed between the two jaws, the said space or opening being presentedin position to receive the yarn or thread, which is passed down into therear pair of the notches or slots 16 18 of the cheek-pieces. Nearer theaxis of rotation of the bight-former, but eccentrically with relation tothe said axis, and toward the front in the position normally occupied bythe bight-former, (shown in Figs. 5 and 8,) the bight-former isfurnished with a pin 24, rising vertically therefrom and around whichthe said yarn or thread is bent to form the bight bythe movement ofpartial rotation which is communicated to the bightformer for thepurpose. The pin 24is slightly tapered to facilitate the discharge ofthe bend or bight of yarn or thread upwardly therefrom. rhe distanceseparating the gripper and pin from each other corresponds with thedesired or necessary length of the portion of the first yarn that isswung around toward the main portion of the said yarn in forming abight. Adjacent the pin 24 the bight-former is provided with an uprightwall 92, Fig. 9, at the top of which is a transversely-extend- The saidsurface 25 serves as a support for the two yarns during diiferent stagesof the operations. Adjoining the pin 24 the bight-former is furnished atthe side thereof which is turned to the front in Figs. 5 and 8 with ahoriZontally-projecting spur 27. In the turning movement of thebight-former the said spur engages with the second yarn and conlines thelatter in place adjoining the pin 24, while the first yarn is beingdoubled around upon itself and the said pin to form the bend or bighttherein. The said second yarn is guided into a position at the rear ofthe said pin and spur in Figs. 5 and 8 in being placed within thevertical notches or slots 17 and 19, as indicated in Fig. 20, Sheet 5.The bight-former has also at the rear in Figs. 5 and 8 a vertical web oriiange 28, in front of which the said second yarn is placed in beingpassed into the said notches or slots. The outer end of the said web orflange projects into proximity to the clamp members Z e at the innerside of the latter and is designed to hold the second yarn at such sidefrom bending toward the rear out from the grasp of the clamp members Ze, its purpose in this connection being' similar to that of theguide-piece e, which is located at the other side of the said clampmembers. The second yarn thus is restrained at both sides of the clampmembers (Z e from bending or swerving rearward out from the graspthereof. For the purpose of communicating to the bightformer a rotaryoscillating' movement around its vertical axis, a pinion 29 is affixedto the bight-former at the lower end of the journal 91, the said pinionbeing engaged by a rack 30, Figs. 4 and 5, which is provided on abellcrank 31. The said bell-crank is pivoted at 32, Fig. 4, to thcbottom piece 3 and is operatively engaged by a lever 33, the lattercarrying a pin 34, which works within a cam-groove that is formed in oneside of a cam-disk 35, the said cam-disk being fast upon the shaft 13.

rfhe carrier 10 is provided with a shaft or journal 36, (shown by dottedlines in Figs. 11, l2, and 13, Sheet 3,) that is fitted within a bearingwhich is provided in or upon a stand 37,'Figs. 3, 11, 12, and 13, risingfrom the bottom piece 3. The axis of the said shaft or journal extendsin a somewhat diagonal direction-z'. e., is upwardly as well astransversely inclined toward the front end of the machine, as indicatedin the figures just referred to.

Tith the front end of the shaft or journal 36' is fixedly connected anarm 38, the outer portion of which is bentforward in the direction ofthe length of the said shaft or journal. In the normal position of thecarrier (shown in Fig. 3 of Sheet 2, Figs. 5 and 6 of Sheet 3, and Fig.7 of Sheet 4) the said outer portion of the arm 38 is located adjacentthe cheekpiece 15. A notch or depression 39 is formed in the saidportion to accommodate the yarn which is entered into the notch or slot18 and to permit the said yarn to descend sufficiently within the saidnotch or slot. rlhe arm 38 is furnished with means for engaging with theyarn which is entered into the other notch or slot 19 and holding thesame, the said means consistingin the'presentinstance of a grippercomprising a fixed jaw 40, Figs. 11, 12, and 13 of Sheet 3, and amovable jaw 41, the latter being pivoted to the former at 42 andprovided with a bent tail or lng 43 by means of which to actuate thesame. The movable jaw 41 is operated to open and close the same relativeto the iixed jaw 40 by means of an arm 44, Figs. 3, 5, 6, and 7, whichis pivoted at 45, Figs. 5 and 6, to an upright plate 451, which isattached to the bottom piece 3. The said arm 44 is formed with a notch46, opening upwardly, which receives the bent tail or lug 43 when thecarrier occupies its normal position. At the proper times in the workingof the machine the arm 44 is swung in one direction or the other byactuating connections, which are shown best in Figs. 6 and 7, and whenthus swung it operates the movable jaw 41 to open or close the same, asaforesaid. The said actuating connections com- IOO IIC

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prise a bar 47, extending' lengthwise of the machine and having at itsforward end a vertical portion 48, which is notched at its lower end,the said notch receiving a pin 49, carried by the arm 44 below itspivot. then the bar 47 is moved in the direction of its length, the arm44 is turned about its pivotal axis and the movable jaw 41 o1c thecarrier is operated. AThe bar 47 is moved lengthwise through the agencyof an arm 50, which is mounted at its lower end upon a pivot 51,connecting it to an arm 52, Figs. 6 and 7, projecting rearwardly fromthe bottom piece 3, and also of an arm 53, lixed upon the shaft 13 andcarrying a pin or roll 54. The said arm 50 is furnished withcam-surfaces 55 56. In the rotation or the shaft 13 in the directionindicated by the arrow in Fig'. 6 the pin or roll 54 contacts with thesaid cam-surfaces successively. The action ot' the pin or roll 54ag'ainst the cam-surface 55 in passing' along' the latter occasionsmovement of the arm 50 and bar 47 toward the right-hand side in Fig. 6into the position in which such parts are represented in the saidligure, moving thereby the upper portion of arm 44 rearward. Thismovement oi' the said upper portion operates through the engagement ofthe same with the tail or lug 43 to turn the movable jaw 41 into itsopen position, as in Figs. 6 and 11. Normally the parts in questionstand at rest in the positions in which they are represented in Fig. 6,with the pin or roll 54 in contact with can1sui't'ace 55 and the jawsot' the carrier open. When the shaft 13 is set in motion, the action ol'the pin or roll 54 against the cam-surface 56 moves arm 50 and bar 47toward the left-hand side in Figs. 6 and 7, swinging the arm 44 into theposition in which it is shown in Fig. 7, the said arm 44 operating themovable jaw 41 to cause it to close against the lixed jaw 40. For thepurpose of causing the carrier to turn about the axis of its shalt orjournal 36, so as to carry its yarn-engaging portion and the end ot'yarn which is held thereby upward and around in a curved path in atransversely-extending oblique plane, as required in laying the secondyarn around the proximated portions oi the bend or bight of the lirstyarn, the carrier is 'furnished at the inner or rear end of the saidshaft or journal with a pinion 57, Figs. 3. 11, 12, and 13, and a rack58 is provided for engagement with the said pinion, the said rack being'carried by an arm or lever 59, Figs. 3 and 4, having' a pin or roll 60,which works in a cam-groove in one side of a cam-disk 61, that is tastupon the shaft 13.

The trimmers by which, afterthe two yarns have been grasped by theholding portions or grippers oi' the bight former and carrier, theextremities ol the said yarns are trimmed o close to the said holding'portions or grippers are shown best in Figs. 5 and 6, Sheet 3, and Fig.7, Sheet 4. The trimmer which acts on the extremity ot the first yarnadjacent the outer side ot' the holding portion or gripper oi thebight-former comprises a lixed blade 62 and a movable blade 63. rlhelixed blade 62 is constituted by the `forward edge o1" anupwardly-extending portion of the vertical plate 451, which latter, asbe't'ore stated, is attached to the bottom piece 3. The movable blade 63is pivotally mounted at its lower end upon the stem of the screw 64,which screws the plate 451 to the bottom piece 3. The said movable bladeis actuated by means of a pin 65 engaging' it with the bar 47. Theblades 62 and 63 constitute a pair of shears and are located closelyadjacent the position which is occupied by the gripper of thebight-'former when this last stands in its normal position of rest, asin Fig'. 5 ot' Sheet 3. When the blade 63 is separated from the lixedblade 62, as in Fig. 6, the space between the two blades is in line withthe opening between the jaws 2O 21 of the bight-former gripper and alsowith the notch or slot 18 of the cheek-piece 13. Consequently as the{irst yarn is moved down into place in the machine it passes intoposition between the blades 62 and 63, as well as between the jaws oi'the said gripper. The trimm'er which is employed to trim the extremityot' the second yarn adjacentthe outer side of the holding portion orgripper of the carrier comprises a movable blade 66 and a lixed blade67. The said fixed blade is constituted by a portion of the rear wallot' the notch or slot 19 in the cheek-piece 15, while the said movableblade is mounted by a pivot 671, Fig. 6, upon the said cheek-piece. Themovable blade 66 is provided with a pin 68, projecting' therefrom andentering a notch 69 in the outer or forward end 48 of the bar 47. Theblades 66 67 are located closely adjacent the outer side of the holdingportion or gripper of the carrier 10 when the latter is at rest in itsnormal position. l/V hen the blade 66 is separated from the tixed blade67, as in Fig. 6, the opening between the said blades registers with theopening between the jaws or' the carrier-gripper and also with the notchIIO or slot 19 of the cheek-piece 15, so that as the second yarn ismoved down within the said notch or slot 19 it passes simultaneouslybetween thejaws ol.'I the carrier-gripper and the blades 66 67. Inconsequence of the eng'agement of the gripper-actuating arm 44 andmovable blades 63 and 66 with the bar 47 the movable jaw of thecarrier-gripper and the movable trimmer-blades are all actuated inunison when the said bar 47 is moved lengthwise. Thus the movement ofthe said bar toward thc left in Figs. 6 and 7, which is produced by theaction ot' the pin or roll 54 of the arm 53 against the cam-surface 56of the arm 50, occasions the closing of the carriergripper and alsocauses the extremities of the two yarns to be trimmed orf by thetrimmers, the timing` being' such that the yarns are held fast by thegrippers as the severing of the extremities thereof takes place.

The spreader 11 consists of aswinging arm that is provided adjacent itsfree extremity with a yarn-engaging projection 70. (Shown best in Fig. 5of Sheet 3.) The said arm is provided with a shaft or journal 71, (shownby dotted lines in Fig. 2,) that is mounted within a bearing 7 2 in anupwardly-extending' portion of the stand 37. To the rear extremity ofthe said shaft or journal 71 an arm 73 is attached. the spreader 11 inits normal working position, with its yarn-engaging projection extendedinto the path which the second yarn is caused to take in being moved bythe carrier 10 around the bight of the first yarn, a leafspring 74 isattached to the stand 37 by means of a screw 75, the free extremity ofthe said spring bearing against the said arm 73. The spreader is movedto disengage its projection 70 from the second yarn at the proper timein the working of the machinegna-mely, after the extremity of the saidsecond yarn has become engaged by the interlocker and the disengagementof the said extremity from the grasp of the carrier has taken placethrough the agency of a Acam projection 76, Fig. 3, which is carried bythe periphery of the camdisk 35 on shaft 13. After the cam projectionpasses out of engagement with the arm 73 the spreader is returned to thenormal position thereof by the action of the spring 74.

The interlocler 12 (see more particularly Fig. 3, Sheet 2, and Figs. 5,14, 15, and 16 of Sheet 3) consists, essentially, of a curved orarc-shaped rigid finger provided with a threadengaging clamp 77 andhaving a shaft or journal 78. The shaft or journal is fitted to abearing at 79, with which the stand 37, rising from the bottom piece 3,is furnished. For the purpose of oscillating the interlocker around theaxis of the said shaft or journal the latter has fixed thereon a pinion80, which is engaged by the rack 8l, Fig. 3, the said rack beingprovided upon an arm or lever 82, carrying awpin or projection 83, Fig.4, working in a cam-groove that is formed in the inner face of acam-disk 84, fast upon the shaft 13. By the action of the walls of thesaid cam-groove upon the pin or projection 83 in the rotation of thesaid shaft and cani-disk the arm or lever 82 is swung so as tocommunicate to the interloclier a partial forward rotation and return.The clamp 77 of the interloclier consists of a fiat spring which isfixed alongside one side of the curved finger constituting the rigidportion of the interloclier, the said spring pressing closely againstthe said side of the finger except at the point or extremity of thefinger, which last diverges transversely slightly from the spring-clamp77 to facilitate the entrance of a yarn between the two. The freeextremity of the spring For the purpose of holding'.

projects a short distance in advance of the tip of the rigid finger.

lhe'operation of the machine which has been described herein isillustrated by Figs. 20 to 24, inclusive, which show certain of the mainstages in the working. The said figures are on the order of diagrams,the parts being shown therein separated more widely apart from oneanother than in the preceding views in order to secure greaterclearness. In the said figures for convenience in identifying andtracing the respective yarns one of the latter is shown as black theother as light. 20 the parts are represented at rest prior to beginningthe knot-tying operations and the two yarns are represented in therelations to the working parts which they assume when placed within thenotches or slots 16 18 and 17 19 of Figs. 1, 2, 3, zc. Thus the firstyarnt'. e., the black one-is shown as lying behind the clamp member a(the latter being in open condition) and between the jaws 2O 21 of thegripper of the biglit-former, as well as between the blades 62 63 of thetrimmer which is adjacent the bight-former, while the second yarn-z'.e., the light one-extends over the clamp member CZ, over the support orrest of the bight-former, between the jaws 40 41 of the gripper of thecarrier, and between the blades 66 67 of the trimmer which is adjacentthe position normally occupied by the carrier-gripper. Then now theshaft 13 is caused to rotate, movement is communicated therefrom to therespective parts,causing them to assume the successive positions inwhich they are represented in Figs. 21 to 24. Thus the clamp member CZis lowered from its position in Fig. 17, Sheet 4, and Fig. 20, Sheet 5,to that in Figs. 18 and 21, the clamp member e being closed downpartially upon the clamp member d, so as to clasp the second or lightyarn lightly between them, as in Fig. 21. This movement of the clampmembers Z e causes the portion of the said yarn which extends toward theleft of the bight-former to be depressed, as in the said figure, therebybending the said yarn downward at the rear of the spur 27 over the restor support of the bight-former. Simultaneously a rearward movementcommunicated to clamp member d causes it to grip the first or black yarnagainst the cheek-plate 14. A turning movement of the bight-former ofsmall extent in the direction of the arrow which is marked on the shaftor journal thereof in Fig. 21 presses the movable jaw of the gripper ofthe bight-former against the exterior of the stationary bearing 79 ofthe shaft or journal of the interlocker, thereby causing the saidmovable jaw to be closed against the fixed jaw 20, so as to clamp firmlythe first or black yarn. The movable jaw 41 of the carrier-gripper alsois closed relative to the fixed jaw 40, (by the action of the arm 44 ofFigs. 6 and 7, &c.,) thus clamp- In Fig;

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ing the second or light yarn. Movement communicated to the movableblades 63 and 66 of the two trimmers causes the portions of the twoyarns which extend beyond the two grippers to be cnt ofi' closelyadjacent the latter. (See Fig. 21.) Rotary movement of the bightformerin the direction of the arrow upon its shaft or journal in Fig. 22 tothe extent of a little more than halfl a revolution, causing' it toassume the position in which it is shown in Fi 22, next carries the bight-former gripper and the extremity of the lirst or black yarn heldthereby forward below the portion of the second or light yarn thatextends from the rest or support of the bight-former to thecarriergripper in Fig. 21 and doubles the lirst or black yarn around thepin 24 and light yarn, forming thus a bight or bend of the lirst orblack yarn, inclosing the second or light yarn as well as the pin 24, asshown in Fig. 22. Simultaneously the carrier swings lupward and aroundin the direction that is indicated by the arrow near the same in thesaid figure, taking over with it the extremity of the second or lightyarn. As this swinging movement of the carrier occurs the interlockerbcgins to swing forward in the direction indicated by the arrow near thesame in Fig. 9.2, the second or light yarn being laid by the movement ofthe carrier across the convex outer side or back of the interlocker. Inconsequence of the eccentric position of the pin 24 and the spur 27 uponthe bight-former the movement of the latter in turning from the positionof Fig. 2l to that of Fig. 22 carries the said pin and spur toward therear nearer to the shaft of the interlocker, thereby shifting the bightof the lirst or black thread into close proximity to the said shaft andwithin the radius of the arc which is described by the linger 1of theinterlocker in its forward turning movement in order that as suchforward movement continues the linger of the intcrlocker may pass downin front of the bight, as in Fig. 23. The advance of the carrier laysthe second or light yarn upon the projection or hook of the spreader 11also, as in Fig. 23, and is continued until the grasping portions of thejaws of the carrier-gripper pass by the gripper of the bight-former andapproach the central portion ofv the bightformer, as in Fig. 23, whichcauses the said yarn to practically encircle the approximated portionsof the lirst or black yarn. During the lirst portion of the swingingmovement of the carrier it pulls the second or light yarn forwardsomewhat in the direction of its length, drawing' the said yarn betweenthe partially-closed clamp-jaws Z c, which operate to hold the yarn withjust suflicient force to produce a degree of tension which willstraighten it out and prevent the passage of kinks or the like as it ispulled forward by the action of the carrier. As the carrier approachesits position in Fig. 22 a slight additional closing movement of clampmembers Z f: occurs, whereby the second or light yarn is clampedsecurely and held from rendering further between the said clampingmembers. The subsequent portion of the advancing movement of the carrierplaces the leading' portion of the said yarn in position to enterbetween the leaf-spring 77 and the rigid finger of the interlocker. Atthis time the yarn is comparatively taut in consequence of being bentabout the rounded back of the interlocker and the projection or hook ofthe spreader, and thereby is enabled to pass in between the rigid tipoli' the interlocker and the leaf-spring 77 as the interlocker completesits forward turning movement, the entrance of the yarn between the saidmembers being facilitated by pressure transmitted laterally through theyarn against the leaf-spring, such pressure tending to separate thelatter from the rigid linger. The second or lightyarn having beenentered between the spring' and rigid linger of the interlocker, thecarrier moves reversely,the jaws thereof withdrawingfrom the end of suchyarn and leaving the same in the grasp of the interlocker, the yarnbeing prevented from accoinpai'iying the said jaws by the hold of theclamp (il a upon the yarn coupled with the frictional resistance whichresults from bending the yarn around the backof the interlocker, theprojection or hook of the spreader, and the tip portion of the rigidiinger of the interlocker. The spreader now moves in the direction thatis indicated bythe arrow upon it in Fig. 24 to disengage its projectionor hook from the loop of the second or light yarn, after which theinterlocker is retracted, as indicated by the arrow near the same inFig. 24, so as to draw the extremity of the second or light yarn acrossthe proximated portions of the bight or bend of the lirst yarn andbetween such portions and the encircling portion of the second yarn, aswill be clear from Figs. 23 and 24, thus effecting the interlocking. Asthe retraction of the interlocker proceeds the clamp-jaws (l e are stillfurther depressed, as indicated in Fig. 24;, the movements of theintcrlocker and clamp-jaws d e in opposite directions drawing taut theportion of the second or light yarn between them which has beeninterlocked about the pin 24 and first or black yarn, so as to tightenthe knot, the continuance of such movements eeting the release of thesaid second or light yarn from the clasp of the interlocker. A slightmovement of the bightformer in the direction that is indicated by thearrow upon its shaft or ljournal in Fig. 24 presses the free extremityof the movablejaw 21 against the lower end of the spreader, therebyopening the said jaw relative to the lixed jaw 20, so as to release theend of the first or black yarn. The bight-former, carrier, andinterlocker now are caused to return to their original positions. Theclamp member a is opened to release the first or black yarn. The clamp de is raised and the member c opened relative to the member Z to releasethe second or light yarn, -the upward movement of the opened clamp (Zebeing continued above the normal position of said clamp, which isrepresented in Fig'. 17, so as to cause the arm or lever Z to lift theyarns out of both of the slots 16 and 17 and also strip the knot off thepin 24 of the hightformer. In performing this last action the arm orlever Z operates as a stripper. The completed knot is shown in Fig. 25on an enlarged scale. As the carrier returns to the position which itoccupies in Fig. 7 the projection or tail 43 of the movablejaw 41thereof enters the notch 46 of the actuating-arm 44. Thereafter the bar47 is operated to move the said actuating-arm and the movable blades ofthe two trimmers for the purpose of opening the carrier-gripper and thesaid trimmers, thereby placing them in readiness for receiving the yarnswhich are to be united by a subsequent operation of the machine. Thegripper of the bight-former remains in the open condition which wasproduced through the engagement of its movable jaw with the lower endofthe spreader. The clamp Z e returns to its position in Fig. 17.

For the purpose of guiding into proper place the portions of the yarnswhich cross between the opposite cheek-pieces 14 and 15 as the yarns arepassed into the notches or slots 16 18 and 17 19 of the saidcheek-pieces in beginning operations the cheek-piece 15 is formed orprovided with extensions 85 and 86, projecting inwardly at the upper endthereof and having downturned portions, as represented best in Fig. 5,the cheek-piece 14 having also an inward extension 861, Fig. 5. Theextension 85 guides the second or dark yarn into place between the jaws2O 21 of the bi ghtformer and also into place between the blades 62 63of the adjacent trimmer. To further insure the entrance of the said yarnbetween the said blades, the fixed blade 62 itself is formed with anupwardly-extended guide portion 87, Figs. 5, 6, and 7, which arches overtoward the middle of the machine, its inner end terminating above theacting portion of the interlocker at the front of the axis of rotationthereof and also adjacent the projection or hook of the spreader 11,slightly to the rear thereof, while the blade 63 is continued upwardabove the place at which the blades mutually coact. The downturned innerend of the extension 86 of the cheek-piece 15 projects into proximity tothe central portion of the bight-former, a little in front of the axisof rotation thereof, and serves to conduct the second or light yarn intoplace at the rear of the pin 24 of the bight-former, so that it willtake position upon the rest or surface 25 of the latter. rlhe inwardextension 861 of the cheek-piece 14 extends in line with the upperportion of the opposite extension 86 into close j proximity to thedownturned portion of the latter'. The upper portion of the actuatingarm44 extends upwardly to serve as a guide in conducting the second yarninto place between the jaws of the carrier-gripper and also between theblades 66 67 of the trimmer for such yarn. r1`he arched guide portion 87defiects forwardly the portion of yarn which is swung around by thecarrier in the turning movement of the latter, preventing such portionAfrom passing too far to the rear with respect to the interlocker.

My machine may be attached to a suitable fixed support; but lcontemplate constituting a portable machine of the same to enable it tobe carried about by the person making use thereof. It is especiallyadapted for use by the attendant or operative in connection with ayarn-spooling machine. It may be attached to or supported by the personof the user in any convenient or approved manner. l have herein shown anattaching-strap 88, Figs. 1 and 2, suitable to encircle the wrist of theuser, the said strap being furnished with a lacing-cord 89 and lacinghooks or studs 90 to serve as fastenings. Only a portion of the lengthof the lacing-cord 89 is represented in Fig. 2. Other attaching andfastening arrangements may be substituted in practice.

The means and manner of operating the machine may vary in practice. Icontemplate in some instances rotating the shaft 13 by hand and in thepresent instance have illustrated a provision for enabling the saidshaft to be thus rotated, the said provision vbeing in the shape of athumb-wheel 91, Figs. 2, 3, 4, and 5, which is fast upon one end of theshaft. Power driving connections are within the scope of the invention.1 have shown herein a means of storing up power and transmittingconnections between the said storingup means and the shaft 13, suchmeans and connections forming part of the portable machine. Thus at 92,Figs. 3 and 4, is shown a clock-spring which surrounds the hub 93 of aratchet-wheel 94, the said ratchet-wheel being mounted upon the rod 4,with capacity to turn freely thereon. The outer extremity of the saidspring is engaged with a projection 95, carried by a gear-wheel 96, thelatter being also mounted to turn freely upon the rod 4. Vith thespur-gear 96 meshes an intermediate or carrier gear 97, that is mountedupon the arm or projection 52, Figs. 3 and 6, of the bottom piece 3, thesaid carrier also meshing with a gear 98, Figs. 3 and 4, which is fastupon the shaft 13. Vhen the clockspring 92 is wound up, the tensionthereof acts with a tendency to transmit rotary movement through thegears 96, 97, and 98 to the shaft 13. For the purpose of turning theratchet-wheel 94 to wind up the spring and store power therein an arm 99is mounted upon the rod 4 with capacity to turn thereon,

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thesaid arm having pivoted thereto a pawl 100, Fig. 3, which is actedupon by a spring 101, operating with a tendency to press the pawlagainst the periphery of the ratchetwheel. To the segmental outer end ofthe arm 99 is joined one extremity of a Vliexible connector 102, Figs. 2and l), the other extremity of which is joined to the free extremity ofan arm 103, fast upon a rock-shaft 104, which is mounted in suitablebearings in the rear ends of the side pieces 1 and 2. The saidrock-shaft 104 is provided with a projecting arm or lever 105, by meansof which it may be rocked for the purpose of actuating the arm 99 andits pawl 100 to rotate the ratchetwheel 94 for the purpose of winding upthe spring 92. To save space, only a portion of the length of the saidarm or lever 105 is sho .vn in the different ligures of the drawings.Then the said arm or lever is pressed upon to turn the rock-shaft in onedirection, movement is transmitted from the arm 103, through theiiexible connector 102, tothe arm 99 in the direction to cause the pawlto engage with one of the teeth of the ratchetwheel 94 and turn thelatter to wind up the spring. The arm 99 is moved in the reversedirection through the engagement of the pin 106, projectingoutwardly`from said arm, (see Figs. 2 and 3,) with the radial outer extremity ofthe spring 107, (see more particularly Fig. 2,) which spring is woundupon a springbarrel 108 at one end of rod 4, the said springl actingwith a tendency to hold the pin 106 pressed against a iixed stop-arm109. Aholding-pawl 131 for the ratchet-wheel 94 and a spring 132 topress the said holding-pawl against the periphery of the ratchet-wheelare shown in Fig. 4. For the purpose of restraining the shaft 13 frommovement under the action of the force which is transmitted to the samefrom the spring 92, except when such movement is desired to occur, andof releasing the shaft to the action of the said spring when it isdesired that the machine shall operate a stop projection 110, Fig. 19 ofSheet 4, is formed on or applied to the outer face of the cam-disk 84,and for engagement with the said stop projection 110 a detent-lever 111,Figs. 2 and 3, is pivotally mounted upon a screw 112 upon the side piece2. rlhe detent-lever has one extremity thereof-namely, 113-shaped, asshown in Fig. 3, to engage with the stop projection 110, the otherextremity being formed as a thumbpiece, by pressure upon which the levermay be moved to disengage its extremity 113 by radial movement from theshoulder of the stop projection 110. When this disengagement iseffected, the shaft 13 is free to rotate in response to the tension ofthe spring 92. By the action of an expanding-spring 115, which is shownbest in Fig. 2, the detcnt-lever 111 is held normally in position forengagement with the shoulder of the stop projection 110 to insure thatit shall continue in engagement with the said shoulder to hold the shaft13 from rotation and also in order to cause it to catch against theshoulder at the end of a complete revolution of the shaft, so as toarrest the rotation thereof. 1n order to positively insure the saidarrest, the cam-disk 34 is provided with a guiding-cam 114, the actingsurface of which in the rotation of the shaft 13 and disk 84 makescontact with the extremity 113 of the detent-lever 111 in case suchextremity is in an outer position and by such contact pushes theextremity radially inward toward the shaft 13 into the path of movementof the shoulder of the stop projection 110.

The machine which is shown in the accompanyingI drawings when fittedwith the attaching-strap 3S is intended more especially to be worn uponthe left wrist of the user thereof. `W hen it is desired to connect theouter extremity of a yarn drawn from a supply-bobbin with the outerextremity of the yarn which has been wound on a spool mounted upon awinding-spindle forming part of a spooling-machine, the user of themachine rests the arm or lever 105 upon the head of the said spool,arresting the rotation of the spool by the pressure of the arm or leverthereagainst or of the latter and his hand combined. This actionoperates by turning the rock-shaft and actuating the spring-windingdevices to partially wind up the clockspring 92 and place the latterunder greater tension. The user having' hold of the extremities of thetwo yarns with his right hand, the said yarns are drawn by a movement ofsuch hand side by side into the notches or slots 16 13 and 17 19 intoposition at the bottom of the said notches or slots, whereupon thedetcnt-lever 111 is moved by a touch of a finger or other portion of thesaine hand, so as to disengage its acting extremity from the stopprojection 110, the shaft 13 thus being freed to the action of theclock-spring and being rotated thereby, causing the machine to operateas hereinbefore explained. The pressure of the arm or lever 105 upon thehead of the spool then is relieved, and thelatter is allowedto resumeits rotation and to wind the united yarns upon its periphery.

l make provision for insuring the withdrawal of the united portions ofthe yarns from the knot-tying machine as the spool winds the same up inrotating by means of a guide 116. The said guide is located alongsidethe side piece 1 of the machine-frame and is attached to a hub 117, thatis mounted upon the rod 4 with capacity to turn freely thereon. Theguideextends forwardly from the said hub, its acting extremity beingarranged t0 move vertically alongside the side piece 1. For the purposeof transmitting movement to the said guide it is furnished with a tailportion 118, Figs. 3 and 4, the free extremity of IDO which is' bent andenters a slot in an arm 119, that is fast upon the rock-shaft 104C.',lhrough the agency of the said arm and tail the guide is moved whenthe rock-shaft is operated. In consequence of the action of the spring107 in holding the rock-shaft 104 and its arm 119 in the position whichis represented in Figs. 1, 2, and 17 the guide is held normally in anupraised position, as shown best in Figs. 1, 5, and 17. rIhe movementwhich is transmitted to the rock-shaft 1041 b y pressure upon the arm orlever 105, as aforesaid, for the purpose of actuating the pawl-carryingarm 99 to wind up the spring 92 is transmitted by the arm 119 to theguide and depresses the latter below the lower ends of the notches orslots 16 and 17 of the side piece 1, thus permitting the yarns to bepassed down into proper position within the said notches. Thecontinuance of the pressure upon the arm or lever 105 maintains theg'uide in depressed position until after the yarns have been applied tothe machine, the detent-lever 111 has been touched to disengage itsextremity 113 from the stop projection 110, and the machine hasperformed its function of tying' the two yarns together and stopped. Thepressure upon the arm or lever 105 then being relieved, as by raisingthe same out of immediate contact with the head of the spool, the spring107, acting through the arm 99, the flexible connection 102, and the arm103, operates to move the rock-shaft 104 and its arm 119 in the reversedirection, thus causing the guide to swing upward at its working' endabove the level of the knot-tying devices, so that the pull which iscommunicated to the united yarns by the spool in winding up the sameshall draw the said yarns upward and away from the knot-tying devices.

It will be understood that while I have been careful to describecompletely with reference to the drawings the construction of theparticular machine in which in the present instance the invention isshown embodied my invention is not limited thereto, but may be embodiedin many diiferent constructions without involving a departure from thespirit of the invention. I have in the course of the precedingdescription referred to the springwinding devices as being actuated bypressing the arm or lever 105 against a head of a spool upon awinding-spindle forming part of a yarn-spooling machine. It will beclear that for the purpose of actuating the spring-winding devices thesaid arm or lever may be pressed against any other part or member of themachine adjacent or in connection with which it may be used or againstany other suitable rest or abutment.

I claim as my invention- 1. In a lnot-tying mechanism, in combination,means wherebytwo yarns are assembled with one thereof inclosed in abight of the other, and device-s by which the extremity of the inclosedyarn is carried around the doubled portions of the other and interlockedwith the encircling portion of itself.

2. A mechanism for tying two yarns together with a weavers knot,comprising, in combination, means by which one of such yarns is doubledaround the other thereof in the form of a bight, and devices by whichthe free extremity of the other is carried around the doubled portionsof the iirst and interlocled with its own encircling portion.

3. In a knot-tying mechanism, in combination, a bight-former, anddevices by which a second yarn is positioned within the bight of yarnwhich is produced in a yarn by the action of said bight-former and itsfree extremity is passed around the doubled portions of said bight andinterlocked with its own encircling portion.

4r. In a knot-tying mechanism, in combination, devices, including abight -former, by which two yarns are assembled with one thereofinclosed by a bight of the other, a carrier by which the extremity ofthe former yarn is carried around the doubled portions of the otheryarn, and an interloeler which passes the said extremity between thesaid doubled portions and the encircling portion of yarn.

5. In a knot-tying mechanism, in combination, a bight-former, devices bywhich a second yarn is positioned within the bight of yarn produced bythe action of said bightformer and its free extremity is passed aroundthe doubled portions of said bight and interlocked with the encirclingportion of the seeond yarn, and devices to trim olf the surplus portionsof the extremities of the respective yarn.

6. In a knot-tying mechanism, in combination,the bight-former operatingto inclose one of the ends of yarn which are to be united within a loopor bight of the other, the carrier operating to encircle the said loopor bight by said inclosed end of yarn, and the interlocker.

7. In a knot-tying mechanism, in combination, the bight-former, thetrimmer to cutoff the surplus portion of the yarn engaged by thebight-former, the carrier, the trimmer to cut O' the surplus portion ofthe yarn engaged by the carrier, and the interloclrer.

8. In a knot-tying mechanism, in combination, the rotatable bight-formerhaving the pin and the yarn-holding device, and devices by which theextremity of a yarn inclosed in the bight of yarn produced by the rotarymovement of the bightformer is carried around the doubled portions ofsuch bight and interlaced with the encircling portion of yarn.

9. In alrnot-tying machine, in combination, a bight-former, a carrier bywhich a second yarn is carried around the doubled portions of the bightof yarn produced with the aid of the bight-former, a spreader engagingwith the encircling loop of yarn, and an interlocker.

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10. In a knot-tying machine, in combination, a bight-former having aholding device for one yarn, a carrier having a holding' device Jfor asecond yarn, means to actuate said bight-former and carrier, and clampsengaging' with the main portions of the respective yarns during theaction of said parts.

11. In a knot-tying machine, in combination, the hight-former having theg'ripper, the carrier having the gripper, the interlocker, and theclamps Jfor the main portions of the respective yarns.

12. In a knot-tying machine, in combination, the bight-former, thetrimmer to cut oi the surplus portion of the yarn engaged by thehight-former, the carrier, the trimmer to cut otf the surplus portion ofthe yarn engaged by the carrier, the interlocker, and the clampsengaging' with the main portions of the respective yarns during theaction of the said parts.

13. In a knot-tying machine, in combination, a bightformer, devices bywhich asecond yarn is caused to encircle the doubled portions of thebight of yarn produced bythe action of the hight-former and itsextremity is interloeked with the encircling portion, and a stripper.

14. In a knot-tying machine, in combination, knot-tying devices, adevice for storing power, said storing devicehaving driving connectionwith said knot-tying devices, and means to control the actuation of thelatter devices by the stored power.

15. In a knot-tying machine, in combination, knot-tying devices, adevice for storing power, said storing device having' driving connectionwith said 1tnot-tying devices, and detent devices whereby the actuationof the knot-tying devices by the stored power is controlled.

16. In a knot-tying machine, in combination, knot-tying devices, apower-storing spring in driving connection with the said knot-tyingdevices, means to control the actuation ol the said devices by thestored power of said spring, and means to intermittingly wind up saidspring.

17. In a knot-tying machine, in combination, knot-tying devices, apower-storing spring in driving connection with the said knot-tyingdevices, means to control the actuation ofthe said devices by the storedpower, and spring-winding' devices having an operating arm or lever.

18. In a knot-tying machine, in combination, the knot-tying devices, thepower-storing' spring in driving connection with the said devices,detent devices whereby the actuation of the knottying devices by thestored power is controlled, and spring-winding devices having anoperating arm or lever.

19. A portable knot-tying machine provided with means for supporting'the same upon the wrist or forearm of the user.

In testimony whereotl I a'lliX my signature in presence of twowitnesses.

STILLMAN A. lVEST.

Witnesses:

CHAs. F. RANDALL, ROBERT S. BOWEN.

